DNS主要レコードタイプ一覧（18件、IANA 2026年確認）
IANA DNS Parametersを基に、利用頻度の高いDNSリソースレコードタイプを用途付きで整理したCSVです。
更新履歴（1回）
- 2026-06-14T00:10:34+09:00 / 18行 / 重複回避バッチ生成
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| type | value | meaning | typical_use | reference |
|---|---|---|---|---|
| A | 1 | a host address | IPv4 address mapping | RFC1035 |
| NS | 2 | an authoritative name server | delegation and authority | RFC1035 |
| CNAME | 5 | the canonical name for an alias | alias name mapping | RFC1035 |
| SOA | 6 | start of a zone of authority | zone metadata | RFC1035 |
| PTR | 12 | a domain name pointer | reverse lookup | RFC1035 |
| MX | 15 | mail exchange | mail routing | RFC1035 |
| TXT | 16 | text strings | verification and policy data | RFC1035 |
| AAAA | 28 | IP6 address | IPv6 address mapping | RFC3596 |
| SRV | 33 | server selection | service discovery | RFC2782 |
| NAPTR | 35 | naming authority pointer | rewrite-based discovery | RFC3403 |
| DS | 43 | delegation signer | DNSSEC delegation | RFC4034 |
| RRSIG | 46 | DNSSEC signature | DNSSEC authentication | RFC4034 |
| NSEC | 47 | next secure record | DNSSEC denial of existence | RFC4034 |
| DNSKEY | 48 | DNSSEC key | DNSSEC public key | RFC4034 |
| NSEC3 | 50 | NSEC version 3 | DNSSEC hashed denial | RFC5155 |
| NSEC3PARAM | 51 | NSEC3 parameters | DNSSEC zone parameters | RFC5155 |
| TLSA | 52 | TLSA certificate association | DANE TLS binding | RFC6698 |
| CAA | 257 | certification authority authorization | certificate issuance policy | RFC8659 |